Evaluation of whitefly resistance in tomato using no-choice bioassay

Issue Date

10-2017

Abstract

Whitefly, Bemisia tabaci (Gennadius) is one of the most economically important insect pests in agriculture, particularly among solanaceous crops like tomato. This insect causes direct damage by feeding and indirect damage through virus transmission and sooty mold growth. Whitefly control is costly, especially in open field cultivation, as commonly found in the tropics. The exploitation of constitutive plant defenses present in domesticated tomato and wild relatives, may offer a solution for the control of B. tabaci. To identify plant materials with high levels of resistance, we screened 16 accessions of tomato and BC1F2 population using a no-choice clip-on cage bioassay. Based on insect performance parameters such as female adult survival and oviposition (egg count) rate, we found Solanum galapagense S.C. Darwin & Peralta and S. habrochaites S. Knapp to be highly resistant. This bioassay also detected differences in insect performance in a segregating population of BC1F2 plants. This new protocol will provide researchers a more reliable phenotyping method compared to the free-choice bioassay in evaluating plant materials for whitefly resistance.

Source or Periodical Title

The Philippine Entomologist

ISSN

0048-3753

Volume

31

Issue

2

Page

166-167

Document Type

Article

Frequency

semi-annually

Language

English

En – AGROVOC descriptors

SOLANUM LYCOPERSICUM; SOLANACEAE; BEMISIA TABACI; PEST INSECTS; PEST RESISTANCE; INSECT CONTROL; HOST PLANT RESISTANCE; BIOASSAYS

This document is currently not available here.

Share

COinS